Add SEO skills 33-34 and fix bugs in skills 19-34

New skills:
- Skill 33: Site migration planner with redirect mapping and monitoring
- Skill 34: Reporting dashboard with HTML charts and Korean executive reports

Bug fixes (Skill 34 - report_aggregator.py):
- Add audit_type fallback for skill identification (was only using audit_id prefix)
- Extract health scores from nested data dict (technical_score, onpage_score, etc.)
- Support subdomain matching in domain filter (blog.ourdigital.org matches ourdigital.org)
- Skip self-referencing DASH- aggregated reports

Bug fixes (Skill 20 - naver_serp_analyzer.py):
- Remove VIEW tab selectors (removed by Naver in 2026)
- Add new section detectors: books (도서), shortform (숏폼), influencer (인플루언서)

Improvements (Skill 34 - dashboard/executive report):
- Add Korean category labels for Chart.js charts (기술 SEO, 온페이지, etc.)
- Add Korean trend labels (개선 중 ↑, 안정 →, 하락 중 ↓)
- Add English→Korean issue description translation layer (20 common patterns)

Documentation improvements:
- Add Korean triggers to 4 skill descriptions (19, 25, 28, 31)
- Expand Skill 32 SKILL.md from 40→143 lines (was 6/10, added workflow, output format, limitations)
- Add output format examples to Skills 27 and 28 SKILL.md
- Add limitations sections to Skills 27 and 28
- Update README.md, CLAUDE.md, AGENTS.md for skills 33-34

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

custom-skills/33-seo-migration-planner/desktop/tools/ahrefs.md

@@ -0,0 +1,37 @@
+# Ahrefs
+
+> MCP tool documentation for migration planner skill
+
+## Available Commands
+
+- `site-explorer-metrics` - Get current organic metrics (traffic, keywords) for a domain
+- `site-explorer-metrics-history` - Get historical organic metrics for pre/post comparison
+- `site-explorer-top-pages` - Get top performing pages by traffic for baseline
+- `site-explorer-pages-by-traffic` - Get pages ranked by organic traffic for risk scoring
+- `site-explorer-organic-keywords` - Get keyword rankings per page
+- `site-explorer-referring-domains` - Get referring domain list for risk scoring
+- `site-explorer-backlinks-stats` - Get backlink overview for migration impact assessment
+
+## Configuration
+
+- Requires Ahrefs MCP server configured in Claude Desktop
+- API access via `mcp__ahrefs__*` tool prefix
+
+## Examples
+
+```
+# Get site baseline metrics
+mcp__ahrefs__site-explorer-metrics(target="example.com")
+
+# Get top pages for risk scoring
+mcp__ahrefs__site-explorer-top-pages(target="example.com", limit=500)
+
+# Get traffic history for pre/post comparison
+mcp__ahrefs__site-explorer-metrics-history(target="example.com", date_from="2025-01-01")
+
+# Get backlink stats for a specific page
+mcp__ahrefs__site-explorer-backlinks-stats(target="https://example.com/important-page")
+
+# Get keyword rankings
+mcp__ahrefs__site-explorer-organic-keywords(target="example.com", limit=200)
+```